Mix the flour, sugar and baking powder in a bowl. Triturate the shortening thereof. Add the egg. Mix everything together into a dough. Press the dough in a greased small baking tray, about 20×30 cm. Distribute the jam over the dough. Mix oatmeal, sugar and vanilla sugar to stray ripped. Melt the butter and pour over it. Stir well. Spread oatmeal mass of the jam. Bake in the lower part of the oven, at 200 degrees, about 20 minutes. Let cool and then cut into squares.